EP1688546A2 - Vérin, de préférence pour une benne preneuse - Google Patents

Vérin, de préférence pour une benne preneuse Download PDF

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Publication number
EP1688546A2
EP1688546A2 EP06100872A EP06100872A EP1688546A2 EP 1688546 A2 EP1688546 A2 EP 1688546A2 EP 06100872 A EP06100872 A EP 06100872A EP 06100872 A EP06100872 A EP 06100872A EP 1688546 A2 EP1688546 A2 EP 1688546A2
Authority
EP
European Patent Office
Prior art keywords
liner
jack
axial end
joint
channelling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06100872A
Other languages
German (de)
English (en)
Other versions
EP1688546A3 (fr
Inventor
Enzo Gusella
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUSELLA Riccardo
IMASSO Renzo
Original Assignee
GUSELLA Riccardo
IMASSO Renzo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUSELLA Riccardo, IMASSO Renzo filed Critical GUSELLA Riccardo
Publication of EP1688546A2 publication Critical patent/EP1688546A2/fr
Publication of EP1688546A3 publication Critical patent/EP1688546A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2271—Actuators and supports therefor and protection therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1433—End caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages

Definitions

  • the present invention relates to an actuator device, particularly for an orange-peel bucket.
  • the booms of excavators, loaders and cranes mounted on trucks may be equipped with orange-peel buckets, for loading, raising and moving material: they comprise a plurality of shovels, whose upper ends are hinged to a central supporting column and turn above respective horizontal axes under the action of respective hydraulic jacks between an open position and a closed position.
  • the jacks are hinged to the central supporting column, or to another support, so as to turn during the opening and the closing of the shovels and are fed with pressurised oil by means of flexible pipes which are fastened, at their ends, to the liners of the jacks themselves.
  • the oil feeding pipes are relatively close to the orange-peel bucket shovels, consequently relatively high risks of accidental breakage of the pipes themselves during loading, transporting and unloading operations of the material exist.
  • standards impose to envisage, downstream of the pipes, automatic protection valves which close the oil outlets from the jacks if pressure drops due to leakage of oil from the pipes, so as to maintain in fixed position the jacks themselves and, therefore, the shovels to prevent falling of material from the orange-peel buckets and to safeguard the safety of the surrounding working environment.
  • Such automatic stop valves are undesirable because they introduce localised loss of load in the oil flow from and to the jacks during normal operative conditions, with consequent and undesired increase of temperature of the oil itself.
  • an actuator device in particular for an orange-peel bucket, as defined in claim 1.
  • number 1 shows an orange-peel bucket adapted to be fitted to the end of an operative boom of an earth-moving machine or other machine (not shown) and comprising a vertical central support column 2 which ends with a lower plate 3.
  • the orange-peel bucket 1 comprises a plurality of shovels 5, whose upper ends 6 are hinged to the plate 3 about respective horizontal axes 7 to turn between an open position and a closed position.
  • the opening/closing rotation is caused, for each shovel 5, by a respective actuator device 8, which comprises a supporting and attaching portion 9 to column 2 and to a hydraulic jack 10.
  • the portions 9 of the devices 8 constitute part of a flange 11 fitted axially to the column 2 in fixed position, and each has a respective pair of channels 12,13, which extend radially from an inner cylindrical surface 14 of the flange 11, where they communicate with the respective distribution channels (not shown) made in column 2 to allow the input/output of oil flows from/to the respective jack 10 under the control of an earth-moving machine hydraulic system (not shown).
  • Each jack 10 comprises a liner 15 having an bottom end 16 hinged to the respective shovel 5 about a horizontal axis 17 (figure 1); and a rod 18 extending along an axis 19 orthogonal to axis 17.
  • the liner 15 accommodates a piston 20, which is integrally connected to the inner end of the rod 18 and reciprocally, axially and fluid-tightly separates a chamber 21, defined on end 16, and a chamber 22, which accommodates part of the rod 18.
  • the outer end of the rod 18, indicated by reference number 23, is coupled to the respective portion 9 by means of a joint 24 to turn with respect to the flange 11 about a horizontal axis 25 parallel to the axis 17 (figure 1) during the opening/closing rotations of the respective shovel 5.
  • the joints 24 are spherical to compensate for possible twisting actions on the shovels 5, allowing freedom of rotation of the rods 18 with respect to the flange 11 about axes also different from the axes 25.
  • Each joint 24 comprises a spherical head 26 integrally connected to the end 23 and a spherical seat 27, which is engaged by the fluid-tight head 26 by means of seal rings 60,61, has an inlet slot 28 crossed with end clearance 23, and is defined by two bodies 29,30 having essentially cylindrical outer shape.
  • the bodies 29,30 are coupled to the fluid-tight position 9 by means of seal rings 62,63, are fastened by means of screws (not shown) coupled to a terminal flange of the body 29 and fastened to the portion 9, and are abutly and reciprocally coupled, by interposition of the ring 61, along a flat surface 31 orthogonal to axis 32 of the slot 28, so that the slot 28 is entirely made inside the body 29.
  • the joint 24 and the rod 18 have a channelling 33 adapted to put into communication the channels 12,13 with the chambers 21,22 and comprising a cylindrical passage 35, which is made along the axis 19 in the head 26 and in the rod 18 and accommodates in fixed position a coaxial rigid tube 36.
  • the tube 36 radially and fluid-tightly separates an inner conduit 37 from a coaxial annular conduit 38: the conduit 37 communicates with the chamber 21, extends to the axial end of the head 26 and communicates with the channel 12 through a hole 39 made in the body 30 and coaxial with the slot 28; while the conduit 38 is closed, with respect to the chamber 21, by a bushing 40 screwed in the passage 35, communicates with the chamber 22 through a radial hole 41 in the rod 18 and communicates with the channel 13 through two holes 42,43 made in the head 26 and, respectively, in the body 30 in radial directions with respect to the axes 19 and, respectively, 32.
  • the holes 42,43 lead along the coupling surface between the head 26 and the seat 27 with respective openings which have dimensions and/or profiles so as to be permanently in reciprocal communication regardless of the rotation angle of the rod 18 with respect to the portion 9.
  • the considerations presented above for the holes 42,43 obviously, similarly apply to the hole 39 and the conduit 37.
  • the opening of a shovel 5 is caused by axially protruding the rod 18 with respect to the liner 15 letting into the chamber 21 a flow of pressurised oil from the distribution channels of the column 2 through the channel 12, the hole 39 and the conduit 37, and letting oil out of the chamber 22 towards such distribution channels through the hole 41, the conduit 38 and the holes 43,42.
  • the closing of the shovel 5 is caused by opposite flows of oil than above.
  • Figures 3 and 4 illustrate respective variants of the device 8, whose components are shown where possible using the same reference numbers used in figure 2.
  • the variant in figure 3 differs from that shown in figure 2 essentially in that the jack 10 is tipped.
  • the end 16 comprises an outer appendix which is integrally connected to the head 26 and extends with clearance through the slot 28; the end 23 is hinged to the shovel 5 about the axis 17 in a way not shown; and the channelling 33 is made in the joint 24 and in the end 16.
  • the hole 41 leads outside the end 16, and is put into communication with the chamber 22 through a rigid tube 45 by the side of the liner 15 and through a radial hole 46 made in the liner 15 itself between the tube 45 and the chamber 22.
  • the tube 45 is replaced by a gap made directly in the side wall of the liner 15.
  • the variant in figure 4 differs from that shown in figure 2 for the following features.
  • the bodies 29,30 are replaced by bodies 29a,30a abutly and reciprocally coupled along a flat surface 31a orthogonal to the axis 25, so that the slot 28 is made half in the body 29a and half in the body 30a.
  • the conduits 37,38 are replaced by holes 37a,38a, which are made in the rod 18 along axes reciprocally distanced and parallel to the axis 19, and end with respective L segments 48,49 leading to the head 26 in reciprocally and diametrically opposite positions.
  • the holes 39,43 are replaced by respective channels 39a,43a made in the bodies 29a and 30a, respectively, and comprise respective end segments 52, which are made along the axis 25, and lead along the spherical surface of the seat 27 with openings having dimensions and/or profiles so as to remain permanently in communication with the segments 48,49, regardless of the angle of rotation of the rod 18 with respect to the portion 9.
  • Figure 5 shows a further variant of the device 8, whose components are shown using the same reference numbers used in figures 3 and 4. Indeed, in brief, the variant of figure 5 is a combination of the features shown in figures 3 and 4, therefore is not described in detail to avoid making the present description dull.
  • the channelling 33 being closed in the joint 24 and in the end 16 or 23 (except the possible tube 45, which however has a rigid wall), is protected from the outside environment during material loading and transporting operations, so that the device 8 has very low risks of breakage and oil leakage, and therefore high degrees of reliability and safety. Thanks to the degree of safety reached, no automatic stop valves which close the oil outlets from the chambers 21,22 in the event of pressure drops and which would cause undesired increases of oil temperature are required.
  • the device 8 and, in particular, the channelling are relatively simple to make, while slot 28 in the bodies 29a,30a is simple to make and entails a limited weakening of the bodies 29a,30a themselves.
  • the device 8 may be used for members other than the orange-peel bucket 1, for example to operate the rotation of the operative boom of an earth-moving machine, or for hydraulic crane jacks, or in fields different from that of constructions, for example to actuate aircraft landing gear; and/or the jack 10 may be fed with a fluid other than oil; and/or the joint 24 may be cylindrical instead of spherical; and/or the seat 27 and the head 26 may be carried by the jack 10 and by the supporting portion 9, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Actuator (AREA)
EP06100872A 2005-01-27 2006-01-26 Vérin, de préférence pour une benne preneuse Withdrawn EP1688546A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000043A ITTO20050043A1 (it) 2005-01-27 2005-01-27 Dispositivo attuatore, in particolare per una benna a polipo.

Publications (2)

Publication Number Publication Date
EP1688546A2 true EP1688546A2 (fr) 2006-08-09
EP1688546A3 EP1688546A3 (fr) 2006-09-20

Family

ID=36282412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06100872A Withdrawn EP1688546A3 (fr) 2005-01-27 2006-01-26 Vérin, de préférence pour une benne preneuse

Country Status (3)

Country Link
US (1) US20060230649A1 (fr)
EP (1) EP1688546A3 (fr)
IT (1) ITTO20050043A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059603A1 (de) * 2007-04-19 2008-11-20 Berends, Reiner Zylindermedienversorgung mittels Kugeldrehdurchführung und doppeltem Zylinderrohr
EP2110481A1 (fr) * 2008-04-14 2009-10-21 Ateliers de Constructions du Beaujolais Dispositif d'inclinaison d'un outil et notamment d'un godet d'un engin de travaux public
ITMO20090152A1 (it) * 2009-06-05 2010-12-06 Negrini Srl Macchina, particolarmente del tipo di benne o polipi per il recupero di materiale
WO2015113812A1 (fr) * 2014-02-03 2015-08-06 Caterpillar Work Tools B.V. Dispositif de préhension pour machine
EP3744985A1 (fr) * 2019-05-28 2020-12-02 Microtecnica S.r.l. Actionneur hydraulique

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7658023B2 (en) * 2004-01-23 2010-02-09 Grant Alan David Wallett Bucket for a mechanical shovel
US8544562B2 (en) * 2009-11-25 2013-10-01 1994 Weyer Family Limited Partnership Tiltable tool assembly
CN104234178A (zh) * 2014-09-27 2014-12-24 吉林省北欧重型机械股份有限公司 球形筐式挖斗
CN106836331A (zh) * 2016-11-24 2017-06-13 柳州柳工挖掘机有限公司 控制抓斗的方法及结构
CN116517062A (zh) * 2023-05-31 2023-08-01 松辽水利委员会流域规划与政策研究中心 一种水渠淤泥处理装置及其使用方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1534439A (en) * 1923-07-10 1925-04-21 Burkhardt Hans Hydraulic tilting device
US3202062A (en) * 1962-04-23 1965-08-24 Ling Temco Vought Inc Actuator
US3152522A (en) * 1962-04-23 1964-10-13 Ling Temco Vought Inc Actuator
US3704650A (en) * 1971-03-29 1972-12-05 Caterpillar Tractor Co Hydraulic jack stroke cushioning means
US4969389A (en) * 1988-05-03 1990-11-13 Foster Raymond K Multisection hydraulic drive unit with single piston rod
JPH07158103A (ja) * 1993-12-10 1995-06-20 Japanic:Kk クラムシェルバケットの構造及びその制御回路
JP4678705B2 (ja) * 2000-11-29 2011-04-27 株式会社小松製作所 油圧駆動式作業機
JP4651220B2 (ja) * 2001-05-07 2011-03-16 株式会社小松製作所 スイベルジョイント付き流体シリンダ

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059603A1 (de) * 2007-04-19 2008-11-20 Berends, Reiner Zylindermedienversorgung mittels Kugeldrehdurchführung und doppeltem Zylinderrohr
EP2110481A1 (fr) * 2008-04-14 2009-10-21 Ateliers de Constructions du Beaujolais Dispositif d'inclinaison d'un outil et notamment d'un godet d'un engin de travaux public
ITMO20090152A1 (it) * 2009-06-05 2010-12-06 Negrini Srl Macchina, particolarmente del tipo di benne o polipi per il recupero di materiale
WO2015113812A1 (fr) * 2014-02-03 2015-08-06 Caterpillar Work Tools B.V. Dispositif de préhension pour machine
CN105939954A (zh) * 2014-02-03 2016-09-14 卡特彼勒作业机具有限公司 用于机械的夹紧装置
US9790059B2 (en) 2014-02-03 2017-10-17 Caterpillar Work Tools B.V. Gripping device for machine
EP3744985A1 (fr) * 2019-05-28 2020-12-02 Microtecnica S.r.l. Actionneur hydraulique
US11085464B2 (en) 2019-05-28 2021-08-10 Microtecnica S.R.L. Hydraulic actuator
US11519431B2 (en) 2019-05-28 2022-12-06 Microtecnica S.R.L. Hydraulic actuator
EP4353976A1 (fr) * 2019-05-28 2024-04-17 Microtecnica S.r.l. Actionneur hydraulique

Also Published As

Publication number Publication date
ITTO20050043A1 (it) 2006-07-28
EP1688546A3 (fr) 2006-09-20
US20060230649A1 (en) 2006-10-19

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